Shelby American unveiled its new GT350 and GT350R models based on the latest Ford Mustang at the Barrett-Jackson auction in Scottsdale, while also mentioning a Trans Am spec race car is in the works.

is the Shelby GT350R really a bonafide trackday machine? We headed to one of the UK's fastest race circuits, Thruxton, to find out. Like the non-R GT350, this Mustang is equipped with a ...